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OUTPUT
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2¡¢ÐµÄOUTPUT×Ó¾ÖµÄÓ﷨Ϊ£º
OUTPUT INTO @table_variable
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3¡¢´úÂëÑÝʾ
USE demo
GO
CREATE TABLE tt
(
id INT IDENTITY,
c1 VARCHAR(15)
)
GO
INSERT INTO tt VALUES ('r1')
INSERT INTO tt VALUES ('r2')
INSERT INTO tt VALUES ('r5')
INSERT INTO tt VALUES ('r6')
INSERT INTO tt VALUES ('r7')
INSERT INTO tt VALUES ('r8')
INSERT INTO tt VALUES ('r9')
INSERT INTO tt VALUES ('r10')
DECLARE @del AS TABLE (deletedId INT, deletedValue VARCHAR(15))
DELETE tt
OUTPUT DELETED.id, DELETED.c1 INTO @del
WHERE id < 3
SELECT * from @del
GO
-----------------------------------------------
USE demo
GO
CREATE TABLE toptest (column1 VARCHAR(150))
GO
INSERT INTO toptest VALUES('t1')
INSERT INTO toptest VALUES('t2')
INSERT INTO toptest VALUES('t3')
INSERT INTO toptest VALUES('t4')
INSERT INTO toptest VALUES('t5')
INSERT INTO toptest VALUES('t6')
INSERT INTO toptest VALUES('t7')
INSERT INTO toptest VALUES('t8')
SELECT * from toptest
GO
CREATE TABLE toptest2 (column2 VARCHAR(150))
GO
INSERT INTO toptest2 VALUES('c1')
INSERT INTO toptest2 VALUES('c2')
--ÉùÃ÷3¸ö±äÁ¿
DECLARE @a INT
DECLARE @b INT
DECLARE @c INT
--¸³Öµ
SET @a = 10
SET @b = 5
SELECT @c = @a/@b
--ʹÓüÆËã±í´ïʽ
SELECT TOP(@c) * from toptest
--ʹÓÃSELECTÓï¾ä×÷ΪÌõ¼þ
SELECT TOP(SELECT COUNT(*) from toptest2) *
from toptest
--Ö¸³ötop
DELETE TOP(2) toptest where column1>'t6'
--¸üÐÂtop
UPDATE TOP(2) toptest SET column1 = 'hi' where column1<='t2'


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